999998881099 has 2 divisors, whose sum is σ = 999998881100. Its totient is φ = 999998881098.

The previous prime is 999998881087. The next prime is 999998881111. The reversal of 999998881099 is 990188899999.

It is a balanced prime because it is at equal distance from previous prime (999998881087) and next prime (999998881111).

It is a cyclic number.

It is not a de Polignac number, because 999998881099 - 2⁵ = 999998881067 is a prime.

It is not a weakly prime, because it can be changed into another prime (999998881199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499999440549 + 499999440550.

It is an arithmetic number, because the mean of its divisors is an integer number (499999440550).

Almost surely, 2^999998881099 is an apocalyptic number.

999998881099 is a deficient number, since it is larger than the sum of its proper divisors (1).

999998881099 is an equidigital number, since it uses as much as digits as its factorization.

999998881099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2448880128, while the sum is 88.

The spelling of 999998881099 in words is "nine hundred ninety-nine billion, nine hundred ninety-eight million, eight hundred eighty-one thousand, ninety-nine".